<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-textt</title>
</head>
<body>
    <div id="app">
        <h2 v-text="name+'!!!'">来了啊</h2><!--  v-text指令替换全部内容 -->
        <h2>那个谁{{message+'!'}}</h2> <!-- 替换指定内容 -->
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
        var app=new Vue({
            el:"#app",
            data:{
                message:"来了啊!!",
                name:"张三"
            }
        })
    </script>
</body>
</html>